Improvement in service-pipe filters



ZSheets-Sheetl'. J. C. NICHOLS. SERVICE-PIPE FILTERS. No. 193,720'.Patented July 31,1877.

NJETERSA PHDTQ-UTHOGRAPHER, WASHINGTON. D )y zsheets-Sheefz. J. C.NICHLS. SERVICE-PIPE FILTERS. N0. 193,720. Patented July 31,1877.

SECTION ON LINE RASA N. PETERS. PHOTOL1THOG55PHER, WASHING'TON. D C.

NITED STATES JOHN C. NICHOLS, OF ATLANTA, GEORGIA.

IMPROVEMENT IN SERVICE-PIPE FILTERS.

Specification forming part of Letters Patent No. 93,720, dated July 31,1877 application filed May 31, 1871.

To all 'whom it may concern:

Be it known that I, JOHN C. NICHOLS, of Atlanta, in the county of Fultonand State of Georgia, have invented a new and useful Improvement inService-Pipe Filters, which improvement is fully set forth in thefollowing specification, reference being had to the accompanyingdrawings.

Similar letters of reference indicate corresponding parts.

Figure lis a side elevation of the improved apparatus 3 Fig. 2, atransverse section.; Fig. 3, `a longitudinal section,and Fig. 4 a planview.

The object of the invention is to cleanse water of its impurities, andthis is effected by the improved apparatus, constructed as follows: T isa vessel, consisting of a wedgeg shaped body, B, communicating at thebottom with a tubular chamber, A, and a cylindrical top, C, bolted tothe body B. With the chamber A communicate the inlet-pipe G, providedwith a valve, O, and the outlet-pipe H, provided with a valve, P, and abranch, F, provided with a valve, Q, extends from the pipe G to the topof the chamber B. A block Or partition, E, rests upon a shoulder, x, atthe .top of the chamber B', and consists of wood,

lava, Or other porous material, and on this rests a body, K, ofpulverized quartz, a second body, L, of charcoal, and a third, M, Ofsand, confined by a screen, N, below the Outlet I. A gauze screen, D,separates the compartments A and B.

For filtering, the cock at O is opened, the cocks at Q and P beingclosed, and the water introduced into the chamber A. By the pressure inthe service-pipe, the water is forced upward through section B; thencestill upward through the pores Of the plate E and the strata offiltering material, and through the pipe l.

For cleansing the filter, the process is as follows The cock at Q isOpened, and that at O is closed. The cock on the outlet-pipe H is alsoOpened. The water is then received through the inlet-pipe F, next to andwashes olf the face of the plate E, and discharges at H, Or, by themoving actionof water on a line Ofservice-pipe, Opening the cocks atOaud P,

and closing that at Q.

Having thus described myinven tion, I claim as new and desire to secureby Letters Patent- 1. The combinatiomin a filter, of the compartments Aand B, separated by a gauze partitiOn,D, the compartment O, separatedfrom B byaporous partition, E, and the pulverized filtering media,arranged within the compartments B and C, as set forth.

2. The combination, with the vessel containing the compartments A B C,Of the pipes F G H I andvalves O P Q, all arranged as set forth.

- JOHN G. NICHOLS. Witnesses:

J. H. JONES, T. F. WINNE.

QFFICE.

